Albert b



A. R. HEDSTHOM.

METHOD OFFILLING WOOD.

APPLICATION FILED NOV. 29, 1915.

Patented Aug. 22, 1916.

ALBERT R. HEDSTROM, OF JAMESTOWN, NEW YORK.

METHOD or FILLING woor.

Specification of Letters Patent.

Patented Aug. 22, 1916.

Application filed November 29, 1915. Serial No. 63,982.

To all whom it may concern:

Be it known that I, ALBERT R. HEDs'rRoM, citizen of the United States, residing at the city of Jamestown, in the county of Chautauquaand State of New York, haveinvented certain new and useful Improvements in Methods for Filling Wood, of which the following, taken in connection with the accompanying drawings, is a specification.

Theinvention relates to processes for filling worm holes and other interstices in wood preparatory to finishing the surface of the same, and has for its object to render the process more expeditious and cheaper, and also to fill the interstices and holes in the wood deeply and permanently so that the surface of the wood may be sanded or otherwise worked upon in finishing; and the invention consists in the novel features and combinations hereinafter set forth and claimed.

The drawings show a perspective sectional view of a machine for filling the wood, which view is a diagram of the different steps in the process.

Great difiiculty has been experienced in fillingthe interstices and particularly worm holes in-valuab1e woods so that the surface could be worked over thereafter by sand papering and other processes without danger of dislodging the filling material.

The process consists in spreading dry powdered plaster Paris over the dry surface of the wood to be filled, using preferably a leather edged scraper or roller in leveling the surface of the 'dry powdered plaster Paris, then passing the board and'plaster beneath a roller under pressure having a soft periphery, preferably of rubber, which presses the dry powder into the worm holes and other interstices in the wood. It is also preferable to repeat this process by shaking a fresh coat of dry plaster Paris upon the surface already coated therewith and after spreading the same carefully to pass the surface under another rubber coated roller under pressure, and in some cases where it is desired to fill the worm holes and interstices still deeper, a third coat of the dry plaster Paris rolled by the rubber roller is applied to said surface.

After the dry powdered plaster Paris has been thoroughly rolled into the worm holes and interstices of the wood, the surface is moistened or wet with a fine spray of glue water, preferably colored to the color of the wood, after which the moistened plaster Paris is scraped smooth from the surface of the wood with a scraper formed of a piece of leather held edgewise against said surface and which should be sufficiently stiff to take all the moistened plaster Paris from the surface of the wood, leaving the holes and interstices level therewith.

It is apparent that water might be used to moisten the plaster Paris and would serve a fair purpose, but the colored glue water serves the added purposes of not only moistening but giving a strong adhesion for the plaster Paris as it sets in the worm holes and interstices so that it is much better to work over in finishing the surface of the wood, and the coloring or die in the glue water changes the plaster Paris to the tint of the wood, thereby aiding in the process of finishing by rendering the process of finishing more uniform and permanent. The glue water is preferably one part glue to fifteen to twenty parts water, according to the adhesive qualities desired for the mixed plaster Paris and glue water.

It is obvious that all the steps of this process may be manually performed by the use of a few simple tools. The dry plaster Paris can be scattered .on the board and spread by any suitable means. It is essential, however, to the deep filling of worm holes and similar interstices that a roller with a soft springy periphery should be applied to the surface with sufficient pressure to sink the dry plaster Paris deeply into the worm holes, after which the surface may be moistened with the glue water by means of a brush or spray and the entire surface scraped clean and level preferably with a leather scraper, though other mav terials for scrapers might be used. The different implements and steps have been shown in the drawing in the form of a machine, which is preferred where worm eaten lumber in quantity is to be filled as, for example, for funiture factories, lumber yards and similar places.

In the machine in the drawing, the numeral 1 designates the rollers for feeding the board 2 between said rollers and through the machine. The numeral 3 designates the vibrating hoppers for the dry plaster Paris 10 by means of which an even coating of the powdered plaster Paris is shaken upon the surface of the board 2. The hoppers each have a narrow slot along their lower edges which permits a thin line of the powdered plaster Paris 10 passing therethrough. Each of the hoppers 3 is followed by a spreading roller 4 which has heavy strips of leather fastened edgewise therein so as to spread the plaster lParis evenly upon the surface of the board 2. The roller 4: is followed by a roller 5, the periphery of which is covered with soft rubber for pressing the dry plaster Paris powder 10 into the worm .holes 9 and other interstices. Three sets of the rollers and hoppers are shown in the drawing so as to insure a deep filling of the dry plaster Paris into the worm holes 9 and interstices of the wood. All of said rollers and hoppers and scrapers are supported on va suitable frame and have suitable actuating mechanism.

A reservoir 6 is provided for the glue water and has a pipe with a long spray nozzle 7 extending therefrom across the board 2 for dampening the powdered coating of the plaster Paris on the board 2. The nozzle 7 is followed by a leather scraper 8 which scrapes the board clean and smooth, thereby finishing the process of filling the surface of the board 2. After the filled boards have dried so that the glue mixed plaster Paris firmly sets in the worm holes and interstices, the surface of the board may be further finished as desired.

ll claim as new:

1. The process of filling interstices in the surface of wood which consists in spreading dry powdered plaster Paris over the wood and rolling said dry powdered plaster Paris into the interstices in said wood and moistening the rolled plaster Paris with an adhesive liquid and scraping the moistened plasger Paris level with the surface of the woo 2. The process of filling interstices in the surface of .wood which consists in spreading dry powdered plaster Paris over the wood and rolling said dry powdered plaster Paris into the interstices in said wood with a roller having a soft peripheral surface and moistening the rolled plaster Paris with a liquid and scraping the moistened plaster Paris level with the surface of the wood.

3. The process of filling interstices in the surface of wood which consists in spreading dry plaster Paris over the surface of the wood and rolling said dry plaster Paris into the interstices in said wood with a soft rubber covered roller and moistening the rolled surface with liquid and scraping the moistened plaster- Paris level with the surface of the wood.

4:. The process of. filling interstices in the surface of wood which consists in spreading dry plaster Paris over the surface of the wood and rolling said dry plaster Paris into the interstices in said wood with a roller covered with soft rubber and moistening the rolled surface with glue water and scraping the moistened plaster Paris level with the surface of the wood.

5. The process of filling interstices in the surface of wood which consists of a plurality of coats of dry evenly spread powdered plaster Paris, each of said coats separately rolled into the worm holes or interstices of the wood, said coated surface sprayed with glue water colored the same as the wood, and the moistened plaster Paris scraped even with the surface of the wood.

In testimony whereof I have affixed my signature in the presence of two witnesses.

' ALBERT R. HEDSTROM.

Witnesses:

L. T. BALDWIN, H. A. SANDBERG. 

